/* 通用样式 */
    body {
        background: linear-gradient(135deg, #1e1e1e, #121212);
        color: #ffffff;
        font-family: 'Roboto', sans-serif;
        margin: 0;
        padding: 0;
    }

    h1, h2, h3 {
        color: #4b0082;
        font-weight: bold;
    }

    p, li, table, code {
        font-size: 16px;
        line-height: 1.6;
    }

    a {
        color: #00ff7f;
        text-decoration: none;
    }

    a:hover {
        color: #ff4500;
    }

    /* 布局 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    nav ul {
        list-style: none;
        padding: 0;
        display: flex;
        gap: 15px;
    }

    nav ul li {
        display: inline;
    }

    .grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
        margin: 20px 0;
    }

    .item {
        background-color: #1e1e1e;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(255, 255, 255, 0.1);
        transition: transform 0.3s, box-shadow 0.3s;
    }

    .item:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 16px rgba(255, 255, 255, 0.2);
    }

    /* 代码块 */
    pre {
        background-color: #282c34;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        color: #00ff7f;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 表格 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    th, td {
        border: 1px solid #444;
        padding: 10px;
        text-align: left;
    }

    th {
        background-color: #333;
        color: #00ff7f;
    }

    /* 按钮 */
    button {
        background-color: #1e90ff;
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        transition: all 0.3s ease;
        cursor: pointer;
    }

    button:hover {
        box-shadow: 0 0 10px #1e90ff, 0 0 20px #1e90ff, 0 0 30px #1e90ff;
        transform: scale(1.1);
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        h1 { font-size: 24px; }
        h2 { font-size: 20px; }
        h3 { font-size: 18px; }
    }

    @media (max-width: 480px) {
        nav ul {
            flex-direction: column;
            gap: 10px;
        }
    }

    @media (max-width: 768px) {
        .grid {
            grid-template-columns: 1fr;
        }
    }

    @media (min-width: 1024px) and (max-width: 1200px) {
        .container {
            padding: 30px;
        }
    }

    @media (min-width: 1440px) {
        body {
            font-size: 18px;
        }
    }

    /* 装饰性图片 */
    .decorative-image {
        width: 100%;
        height: auto;
        border-radius: 10px;
    }

    /* 滚动效果 */
    .fade-in {
        opacity: 0;
        animation: fadeIn 2s forwards;
    }

    @keyframes fadeIn {
        to { opacity: 1; }
    }